公开(公告)号：US20240360800A1

公开(公告)日：2024-10-31

申请号：US18646149

申请日：2024-04-25

Applicant: Perkins Engines Company Limited

Inventor： James DARLEY ,  John Calcraft ,  Stuart Edwards

IPC: F02D41/40

CPC classification number: F02D41/402 ,  F02D2200/0602

Abstract: A fuel injection system for an internal combustion engine is provided. The fuel injection system comprises a primary fuel injector, a sensor, at least one secondary fuel injector and a controller. The primary fuel injector is configured to inject fuel into an ignition chamber of the internal combustion engine. The sensor is coupled to the primary fuel injector, wherein the sensor is configured to sense a fuel pressure of the fuel being injected by the primary fuel injector throughout each injection cycle of the primary fuel injector. The at least one secondary fuel injector is configured to inject fuel into a respective ignition chamber of the internal combustion engine. The controller is configured to receive data indicative of the fuel pressure value throughout each injection cycle. The controller is configured to determine a fuel quantity drift parameter over a plurality of fuel injection cycles based on the data indicative of the fuel pressure value. The controller is configured to adjust a fuel quantity delivered by the primary fuel injector and each secondary fuel injector based on the fuel quantity drift parameter.

公开(公告)号：US12044190B2

公开(公告)日：2024-07-23

申请号：US18103391

申请日：2023-01-30

Applicant: INNIO Jenbacher GmbH & Co OG

Inventor： Alexander Mairhofer ,  Johannes Huber ,  Josef Thalhauser ,  Matthias Grotz ,  Michael Franz Litzlfellner ,  Alexander Gasteiger ,  Michael Perktold

IPC: F02D41/38 ,  F02D41/00 ,  F02D41/12

CPC classification number: F02D41/3863 ,  F02D41/0027 ,  F02D41/12 ,  F02D2041/389 ,  F02D2200/0602 ,  F02D2250/31

Abstract: An internal combustion engine with at least one combustion chamber, at least one fuel delivery line for the delivery of fuel to at least one combustion chamber, and at least one differential pressure control valve for controlling the pressure in the at least one fuel delivery line. The at least one differential pressure control valve is configured to perform a valve opening or valve closing movement based on a pressure difference between the at least one fuel delivery line and a reference volume having a reference pressure. The internal combustion engine further includes at least one pressure relief valve, separate from the at least one differential pressure control valve, and configured to open to cause a pressure relief in the reference volume and a decrease in the reference pressure if a drop occurs in the power to be performed by the internal combustion engine.

公开(公告)号：US12037968B1

公开(公告)日：2024-07-16

申请号：US18158520

申请日：2023-01-24

Applicant: FCA US LLC

Inventor： Louai Faied ,  John M Lebar ,  Ethan M English

IPC: F02M69/46 ,  F02D41/32 ,  F02M37/08 ,  F02M69/54

CPC classification number: F02M69/462 ,  F02D41/32 ,  F02M69/54 ,  F02D2200/021 ,  F02D2200/0414 ,  F02D2200/0602 ,  F02D2250/31 ,  F02M2037/087

Abstract: A fuel delivery system for a vehicle having an engine includes a fuel injection system, a fuel supply line configured to supply fuel from to the fuel injection system, and a fuel pressure sensor. An active expansion chamber (AEC) accumulator is fluidly coupled to the fuel supply line and includes a housing defining an interior chamber and an adjustable expansion chamber, a plunger assembly separating the interior chamber and the adjustable expansion chamber, and an actuator configured to selectively move the plunger assembly to actively adjust a volume of the adjustable expansion chamber. A controller is configured to detect a pressure change condition in the fuel delivery system and, in response, automatically adjust the volume of the adjustable expansion chamber to maintain the pressure of the fuel delivery system below a predetermined threshold to thereby facilitate preventing fuel leakage at the fuel injectors when the engine is shut off.

公开(公告)号：US11994083B2

公开(公告)日：2024-05-28

申请号：US17893873

申请日：2022-08-23

Applicant: Caterpillar Inc.

Inventor： Daniel Reese Puckett ,  Andrew Marrack ,  Bradley Scott Bashore

IPC: F02D41/38 ,  F02D41/24 ,  F02D41/36 ,  F02D41/22

CPC classification number: F02D41/3836 ,  F02D41/2467 ,  F02D41/365 ,  F02D41/3845 ,  F02D2041/224 ,  F02D2200/0602

Abstract: A fuel system for an internal combustion engine includes a fuel control system having a fueling control unit structured to determine a test point on a tip wear-sensitive region of a fuel injector delivery curve, and store measurements of pressure drops in a pressurized fuel reservoir caused by injections of fuel at the test point. The fueling control unit is further structured to produce an injector health signal based on the stored measurements of pressure drop. Related methodology and control logic for calculation of wear parameters for injection signal duration electronic trimming and prognostic health determinations are also disclosed.

公开(公告)号：US20240151191A1

公开(公告)日：2024-05-09

申请号：US18548836

申请日：2022-02-08

Applicant: Robert Bosch GmbH

Inventor： Antonio De Benedictis ,  Antonio Diaferia ,  Bernd Frey ,  Bjoern Noack ,  Charlotte Summerer ,  Christos Hondros ,  Ciro Medolla ,  Daniel Zander ,  John Kuesters ,  Michael Hackner ,  Nello Medoro

IPC: F02D41/38

CPC classification number: F02D41/3845 ,  F02D2041/389 ,  F02D2200/0602

Abstract: The invention relates to a method for operating a fuel injection system (1) for supplying a combustion engine of a vehicle with fuel, in which method the fuel is conveyed at high pressure with the aid of a high-pressure pump (2), fed to a high-pressure accumulator (3), and injected into a cylinder of the combustion engine with the aid of at least one injector connected to the high-pressure accumulator (3). In order to detect any damage to the drive of the high-pressure pump (3), according to the invention



a) the pressure (P) in the high-pressure accumulator (3) is measured and, on the basis of the measured values, a pressure drop (ΔP) in the high-pressure accumulator (3) caused by an injection into a cylinder is determined,
b) a maximum pressure gradient is determined during a pressure build-up phase following the injection,
c) the determined pressure drop (ΔP) and the determined maximum pressure gradient are put into proportion.




The invention further relates to an electronic control unit for carrying out the method.

公开(公告)号：US20240125280A1

公开(公告)日：2024-04-18

申请号：US18483901

申请日：2023-10-10

Applicant: VOLVO TRUCK CORPORATION

Inventor： Gabriele CATALANO

IPC: F02D41/14 ,  F02D35/02 ,  F02D41/00 ,  F02D41/24

CPC classification number: F02D41/1401 ,  F02D35/023 ,  F02D41/0027 ,  F02D41/2422 ,  F02D41/2467 ,  F02D2041/1433 ,  F02D2200/0602 ,  F02D2200/0802 ,  F02D2200/1002 ,  F02D2200/101 ,  F02D2250/36

Abstract: A computer-implemented method for controlling direct injection of hydrogen fuel into an engine cylinder of a vehicle from a hydrogen tank via an injector system. The method includes determining a present hydrogen pressure in the hydrogen tank; determining a present requested engine torque and speed; determining a target injection pressure for injecting hydrogen into the engine combustion chamber using a model the target injection pressure is the injection pressure that, according to the model, minimizes the mechanical work of the compressor, that provides an in-cylinder pressure sufficient for the engine to provide the requested engine torque and speed, that provides NOx emission below a predetermined maximum NOx emission level, and that reduces engine fuel consumption, and adjusting the injector pressure according to the determined target injection pressure.

公开(公告)号：US11898508B2

公开(公告)日：2024-02-13

申请号：US17596433

申请日：2020-06-23

Applicant: Hitachi Astemo, Ltd.

Inventor： Shinya Matohara ,  Yoshihiko Akagi ,  Kazuhiro Oryoji

IPC: F02D41/00 ,  F02B29/04 ,  F02M26/22

CPC classification number: F02D41/0047 ,  F02B29/0425 ,  F02M26/22 ,  F02D2200/023 ,  F02D2200/024 ,  F02D2200/0414 ,  F02D2200/0418 ,  F02D2200/0602 ,  F02D2200/70

Abstract: Provided is an internal combustion engine control device capable of appropriately correcting a flow rate of EGR gas. Therefore, an internal combustion engine control device 20 includes moisture amount calculation units 301 and 302, a dew condensation calculation unit 303, and an EGR correction unit 304. The moisture amount calculation unit 301 calculates a total moisture amount contained in the mixed gas. The dew condensation calculation unit 303 calculates a dew condensation generation amount WQcon in an intercooler based on the total moisture amount. The EGR correction unit 304 corrects a flow rate of the EGR gas based on the dew condensation generation amount WQcon.

公开(公告)号：US20230407809A1

公开(公告)日：2023-12-21

申请号：US18242455

申请日：2023-09-05

Applicant: Walbro LLC

Inventor： Takashi Abei ,  Tatsuya Chiba ,  Mark S. Swanson

IPC: F02D41/34 ,  F02D41/14 ,  F02D41/24

CPC classification number: F02D41/34 ,  F02D41/1475 ,  F02D41/2422 ,  F02D2200/021 ,  F02D2200/0404 ,  F02D2200/0406 ,  F02D2200/0602 ,  F02D2200/101

Abstract: In at least some implementations, a method of controlling fuel injection events, includes determining at least one engine operating condition, determining timing of a desired pressure in an engine intake chamber or at the outlet of a fuel injector, and initiating a fuel injection event as a function of the at least one engine operating condition and the desired pressure. The fuel injection event is initiated prior to the desired pressure occurring and wherein the fuel injection event occurs for a duration such that the fuel injection event terminates after the desired pressure occurs.

公开(公告)号：US11828219B2

公开(公告)日：2023-11-28

申请号：US16101223

申请日：2018-08-10

Applicant: HyTech Power, LLC

Inventor： Evan Charles Johnson ,  William A. Woods

IPC: F02B43/10 ,  C25B1/04 ,  C25B15/08 ,  F02M25/12 ,  F01N3/02 ,  C25B9/06 ,  F02M21/02 ,  F01P3/20 ,  F01N3/025 ,  F02D19/06 ,  F02D41/00 ,  F02D19/08 ,  C25B9/05 ,  C25B9/17 ,  C25B11/00 ,  B01D46/84 ,  C25B1/044 ,  C25B9/07 ,  F01N3/029 ,  F02D41/34 ,  F02B43/12 ,  F02B75/02 ,  F01N3/035 ,  C25B15/02 ,  F02B43/00 ,  F01N3/023 ,  F02B51/00 ,  F02D41/14

CPC classification number: F02B43/10 ,  B01D46/84 ,  C25B1/04 ,  C25B1/044 ,  C25B9/05 ,  C25B9/07 ,  C25B9/17 ,  C25B11/00 ,  C25B15/02 ,  C25B15/08 ,  F01N3/023 ,  F01N3/025 ,  F01N3/0205 ,  F01N3/0253 ,  F01N3/0293 ,  F01N3/035 ,  F01P3/20 ,  F02B43/00 ,  F02B43/12 ,  F02B51/00 ,  F02B75/02 ,  F02D19/0644 ,  F02D19/0671 ,  F02D19/08 ,  F02D19/081 ,  F02D41/0025 ,  F02D41/0027 ,  F02D41/345 ,  F02M21/0206 ,  F02M21/0221 ,  F02M21/0239 ,  F02M21/0248 ,  F02M21/0278 ,  F02M25/12 ,  B01D2279/30 ,  F01N2240/14 ,  F01N2240/34 ,  F01N2250/02 ,  F02B2043/106 ,  F02B2075/027 ,  F02D41/009 ,  F02D41/1446 ,  F02D41/1498 ,  F02D2200/021 ,  F02D2200/0404 ,  F02D2200/0406 ,  F02D2200/0602 ,  F02D2200/0606 ,  F02D2200/0625 ,  F02D2200/101 ,  F02D2200/1002

Abstract: Safety of vehicles employing an electrolysis generator is improved by a rollover abatement system.

公开(公告)号：US20230358188A1

公开(公告)日：2023-11-09

申请号：US18176865

申请日：2023-03-01

Applicant: Ford Global Technologies, LLC

Inventor： Georg Louven ,  Rainer Kiehn ,  Helmut Hans Ruhland ,  Krystian Dylong ,  Guenter Grosch

IPC: F02D41/00 ,  F02D41/40

CPC classification number: F02D41/401 ,  F02D41/0007 ,  F02D41/0027 ,  F02D41/0052 ,  F02D41/009 ,  F02D2041/389 ,  F02D2200/0602 ,  F02D2200/0614 ,  F02D2200/10 ,  F02D2200/101

Abstract: Methods and systems are provided for an engine system. In one example, a method includes adjusting an opening and a closing time of a fuel injector in response to an ignition time of a combustion mixture. The adjusting may include a threshold margin as a further parameter for adjusting the opening and the closing time.